157799 has 2 divisors, whose sum is σ = 157800. Its totient is φ = 157798.

The previous prime is 157793. The next prime is 157813. The reversal of 157799 is 997751.

157799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (997751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157799 - 2⁸ = 157543 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78899 + 78900.

It is an arithmetic number, because the mean of its divisors is an integer number (78900).

2¹⁵⁷⁷⁹⁹ is an apocalyptic number.

157799 is a deficient number, since it is larger than the sum of its proper divisors (1).

157799 is an equidigital number, since it uses as much as digits as its factorization.

157799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19845, while the sum is 38.

The square root of 157799 is about 397.2392226354. The cubic root of 157799 is about 54.0382673426.

The spelling of 157799 in words is "one hundred fifty-seven thousand, seven hundred ninety-nine".